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5d8286b90f
This adds a line index utility. Frequently, I want to be able to efficiently index a file to extract a specific line or range of lines, but it's surprisingly tricky to get exactly right given weird definitions of "what even is a line" and edge conditions around out-of-bounds and such. So this adds a general-purpose utility to pre-calculate the locations of lines in the file, making extracting a line range a zero-allocation, `O(1)` operation. Not implemented: the same index can also be used to find the line that contains an offset, which I've also needed to do before. But I'll save that for when I actually have an immediate use for it. |
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| .. | ||
| BUILD.bazel | ||
| lineindex_test.go | ||
| lineindex.go | ||
| linereader_test.go | ||
| linereader.go | ||
| nullscanner.go | ||